Fibrous myopathy from butorphanol injections.

Wagner, J M; Cohen, S · J Rheumatol · 1991

case_report · Level V

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Abstract

We describe an unusual, and probably underrecognized manifestation of intramuscular narcotic abuse. Fibrous myopathy is a deforming, fibrous infiltration of the muscles used for injection over a prolonged period. It is usually associated with pentazocine or meperidine injections, and to our knowledge, this is the first report of butorphanol causing the entity.

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